package prolog.io;
/*
* Copyright (C) Paul Tarau 1996-1999*/

public interface IOPeer {

  public abstract void print(String s);

  public abstract void traceln(String s);

  public abstract void println(String s);

  //public abstract boolean addReader(Thread readThread);

  //public abstract String getReadString();
  public abstract String readln();  
  public abstract void halt();
}